Why only using one CPU

Just noticed when importing CD into iTunes on my MacBook is only uses one cpu, with activity monitor it show 98-100% CPU and never goes over 100%
My fans also run when importing, I use lossless.
Why not use more CPU speed?
R

I believe only applications writen to do so will take advantage of dual processors. I guess iTunes has not yet been updated for dual processor use.
Patrick

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Multisim 11 only uses one CPU core during simulation

Hi,
Just recently I've been using MultiSim again, v11 if that matters, and simulating goes slow, to my opinion that is.
Now there are two things that I've noticed:
- Multisim only uses one of two CPU cores during simulation, not both;
- I've enabled CPU throttle (AMD's Cool'n'Quiet) but corespeed remains very low even though Multisim needs CPU power while simulating.
The simulating of a NE555-based LED-flash circuit requires about 28 seconds to get to 100ms in the simulation. Now if I can get the CPU to throttle up, by for example having Prime95 stress one of the two cores, then the simulation only requires 12 seconds to get to 100ms.
So here are my two questions:
1. Is Multisim 11 capable of using more than one CPU core while simulating? If yes, how can I get it to use more than one?
2. Probably not the right forum to ask, but is there a way to force Windows 7 Ultimate x64 to throttle up the CPU when Multisim starts simulating? Since Multisim does not seem to stress the only core it uses enough to throttle it up. Using Prime95 on one core does trigger a throttle up.
With regards,
Bart Grefte
Relevant specs:
Windows 7 Ultimate x64
Multisim v11
AMD A4-3400
16GB RAM

Completely forgot this topic....
Is there a good reason why there is no multicore support? Multisim can certainly use it for simulating.
As for the CPU throttling, I found a batch that can increase/decrease the "minimum processor state"-setting and it works immediately, no reboot required.
@echo off
powercfg.exe -getactivescheme > "%userprofile%\appdata\~apo.tmp"
set /p v_currentscheme= <"%userprofile%\appdata\~apo.tmp"
set v_currentscheme=%v_currentscheme:~24,36%
del "%userprofile%\appdata\~apo.tmp"
powercfg -setacvalueindex %v_currentscheme% 54533251-82be-4824-96c1-47b60b740d00 893dee8e-2bef-41e0-89c6-b55d0929964c %1
powercfg -setdcvalueindex %v_currentscheme% 54533251-82be-4824-96c1-47b60b740d00 893dee8e-2bef-41e0-89c6-b55d0929964c %1
powercfg -s %v_currentscheme%
exit
Usage is simple:
Start -> run -> c:\pathtobatch.bat 100
for "minimum processor state"-setting at 100%
Start -> run -> c:\pathtobatch.bat 5
for "minimum processor state"-setting at 5%
Please note that "set v_currentscheme=%v_currentscheme:~24,36%" is not the same for every language. The original batch had "set v_currentscheme=%v_currentscheme:~19,36%" (most likely for the English version of Windows 7), but since my Windows install is in Dutch, I had to change it in order for it to work.
Running the batch with @echo off removed will show why.

Dual G5 only using one processor in Logic 8

So...
Why does my Dual G5 only use one of the two processors in Logic 8? The one processor will go to max, stop the song from a cpu overload, yet the second processor never kicks in.
Please help! U_U
Thanks,
bp

it seems that the buffer settings on audio preferences are too small.
use this setting:
I/O Buffer Size: 512
Process Buffer Range: Large
Or... you are using some heavy third party Virtual Instrument that don't support Altivec on PPC processors.
(many software houses make good plugins that works fine on Intel processors but they forget to use Altivec implementation for PPC Mac side)
G

AME is only using one processing core out of six.

I have not been able to figure out why AME is only using one of the six processing cores that I have in my Core i7 hex core processor. I'm running Windows 7 Ultimate 64 bit and the latest version of AME 2014 CC. When I render in Premiere Pro CC 2014 all cores are utilized. The codec that I'm using in AME is "YouTube SD 480P 29.97 - H.264". The video that is being encoded is fairly complex but it is only 30 minutes long and AME is estimating 18 hours to completion. That seems pretty excessive for that length of video.
Any help would be greatly appreciated.

This forum post may be related to your question.
Re: AME CC2014 Very Slow Encoding

IMovie only using 50% CPU power

Hi,
When I export my project in iMovie my CPU usage holds at 50%. I accept this does mean I can do other things but would like the export to go faster.
Is this usual for iMovie to only use 50% CPU (and only about 1gb of RAM (of 8gb)) or do I need to do something?
New to Macs so any help appreciated.
dcbevan

Hi
As I get it - Doesn't iMovie take full use of multiple core processors. Not even Pro
applications does this to 100%
BUT
RAM - iMovie or FinalCut are not that RAM hungry - 1 to 2 GB would be OK
Free Space on Start-up hard disk - VERY IMPORTANT
• 25Gb my minimum for iDVD
• 10Gb my minimum for iMovie
• 5Gb and iMovie runs slow and instable
• <1Gb and iMovie might not run OK at all
Other applications running in paralell - results in bad performances
• Energy Saver
• Do not spinn down hard disks
• Use of USB/USB2 external hard disks = Slow and bad performances especially when getting full
FireWire or internal e-Sata performs best.
• Screen savers - may be (by directing it to an empty folder - I got the feeling of slight increase
in performances)
My list on howto speed up iDVD Slightly - might also applie on iMovie.
*Speed up iDVD*
To speed up iDVD
TO GET IT TO WORK SLIGHTLY FASTER
• Minimum of 25Gb free space on Start-Up hard disk - if less than 5Gb slow and unstable - less than 1Gb might even not start.
• Choise of encoding method will give very different productions speeds. On my d-G5 2GHz
*Professional Quality (movies + menus up to 120 min.)* - BEST
Takes about 2 x times the other ones - but if quality is of essence
(Quality might be as good as or even better for movies under 60 minutes - by using Best Performances BUT not for movies up to 120 minutes)
2 hour movie + menu = about 4 hours to encode at it’s best on my system
*Best Performances (movies + menus less than 60 min.)* - High quality on final DVD
1 hour including menu = about 1 hour to encode
*High Quality* (in iDVD08 or 09) / Best Quality (in iDVD6) *(movies + menus up to 120 min.)* - slightly lower quality than above
2 hours including menu = about 2 hour to encode
• Use an as simple DVD-menu possibly without any animation at all. This reduces processing speed dramatically. I use ”Old Theme - and Brushed Metal” and animation turned off.
• An as fast Mac and as many cores/CPUs possibly. My PowerMac G5 has two CPUs and iDVD uses about 120% = use more than only one CPU/Core. How many it can address I don’t know (anyone ? )
• If possibly - Use two internally e-Sata drives - Drive access takes a great deal of time
else FW-800 or FW-400 or USB2 or network storage (slowest and near to useless)
to work on one (internal, boot, Mac OS, Start-up hard disk - will be BAD - and slow
Normally my d-G5 2GHz takes about 2 x movie material when iDVD and Mac OS on one internal HD and material is on the other internal one.
Now with material on an external USB2-drive and an external Lacie FW-400 as Start-up drive material of about 1.5h will need about 4-6 hours to get encoded and burned to DVD.
Choise and use of hard disks is essential.
• I guess that a Solid State Disks might improve speed
• No other programs running in BackGround eg EnergySaver, Internet, AirPort, Bluetooth etc.
• Don’t let HD spinn down or be turned off (in EnergySave)
• Move hard disks that are not to be used to Trash - To be disconnected/turned off
• Goto Spotlight and set the rest of them under Integrity (not to be scanned)
• Set screensaver to a folder without any photo - then make an active corner (up right for me) and set
pointer to this - turns on screen saver - to show that it has nothing to show
• If Mac with only place for one internal hard disk. Then I would try to use an external FW (Mac OS Extended) one as Start-Up hard disk and store material on the internal one.
eg iMac or ProBook or alike.
from Karsten -
• I assume that resolution and codec of source is another factor ... scaling (e.g. 1280x720 to 720x576 = that is an 'un-even' calculation). or, a difference in speed reg. to h264, dv-stream or aic as input ....
Yours Bengt W

Pages '09 only uses one processor core?

Hello,
some days ago i had to open a document containing nearly 2.000 pages. Don't ask why.
Working with this document was quite complicated because Pages was responding very slowly. I used the activity monitor to see what was going on and i recognized that Pages only uses one core of my eight core MacPro.
I tested iWork on my iMac and MacBook Pro (both DualCores) as well: same problem.
Does iWork only use one processor core?
Kind regards,
roman

How much memory do you have in your system? I'll bet if you check activity monitor (applications/utilities) and go to system memory tab therein you will see lots of page outs. This happens with huge docs and little memory as the doc is being swapped between active operating memory and the hard disk The only way to solve this problem is to get more memory (not storage) in your system. For a 2,000 page doc you're going to need lots and lots and lots of extra gigs of memory. By the way - how big is the too big file of yours?
Number of processor cores isn't going to solve the issue if you have pageouts. It is a system memory/size of document issue and completely unrelated to how many processor cores you are using.

HT201342 How can I add an e-mail address to my existing icloud addresses? I currently only use one and I would like to ad two more?

How can I add an e-mail address to my existing icloud account? I curently only use one of the three.

Each iCloud account only has a single iCloud account. If you want, you can add up to 3 alias addresses that will receive email in the same iCloud inbox, as explained here: http://support.apple.com/kb/PH2622.

I have two users with different music on each itunes and i can only use one library, how do i use both for one iTouch?

i have two users with different music on each itunes and i can only use one library, how do i use both for one iTouch?

Chris, I believe this link may have the information you're looking for. Welcome to discussions!
http://docs.info.apple.com/article.html?artnum=300432

How do I remove an authorized computer from my itunes account? I am only using one.

How do I remove an authorized computer from my itunes account? I am only using one.

http://support.apple.com/kb/PH12303
Barry

Can I install CC on three computers - I only use one of them at a time?

I'd like to use CC on three computers in three cities where I travel - I only use one computer at a time - is this possible with a single license? If so, how?

As long as you sign out of at least one of them you can. Sign out before you depart from a given city and you should be set to sign in at another.

Since installing an icon-editing add-on, I can't open tabs any more / I can only use one tab at a time.

Ever since I installed the add-on Favicon Picker 2 that lets you change the bookmark icons, I can't open tabs any more. The second tab will open, but if you try to go to a site, the FIRST tab redirects to that site. Basically, I can only use one tab at a time. Is there any way I can keep this add-on and use tabs?

Oh, wow - look at that, you're right :) I didn't want to uninstall the add-on as I like the feature, but simply by disabling it you can keep the new icons AND use tabs. Thanks dude!
(The add-on is Favicon Picker 2 0.6.2.15 by the way - some of the user reviews report the same problem.)

2 atv's both have home sharing enabled but one asks to turn on home sharing on my pc but it is on so can only use one at a time to watch movies from my computer

2 atv's both have home sharing enabled but one asks to turn on home sharing on my pc, but it is enabled on pc so I can only use one at a time to watch movies from my computer

Both atv,s are on the same network, they are wirless and the computer can see them and they are named different.
what ever one i switch on first gets to stream from my computer and the other one asks for home sharing to be switched on, then if i switch both off and start the other one first it gets to stream and the other one which worked asks for home sharing to be turned on. i have hidden all functionality, netflix etc as these are for my 7yr old kids.

I have my photoshop cc installed on my Mac and my windows laptop is it true that I can only use one or the other now? and if this is the case if my mac were turned off should my laptop now work? I am on the photoshop photography program

i have my photoshop cc installed on my Mac and my windows laptop is it true that I can only use one or the other now? and if this is the case if my mac were turned off should my laptop now work? I am on the photoshop photography program its just that i have never noticed tho before i have my mac turned on and the laptop PS works fine on the Mac but not on the Laptop

Hello,
see >>> http://helpx.adobe.com/creative-cloud/help/install-apps.html here >>> How many computers can I install on
I quote: You may install software on up to two computers. These two computers can be Windows, Mac OS, or one each.
If you install on a third computer, it will request you to de-activate on the other two computers. You can then reactivate one of the previous two computers, and use Creative Cloud apps on it.
Good luck!
Hans-Günter

Only recognize one CPU

Hello, I have a Power Mac G5 2.0Ghz (June 2004) with two processor, but the PM only recognize one Processor.

Ervin Loaisiga wrote:
Thank you for answering and excuse me for the previous lines
The symptom persists when I type from the open firmware the command lines provided.
Thank again
When you bring up Activity Monitor in the Utilities folder, then, you only see one CPU usage graph when you click the "CPU" tab at the bottom? Not something like this:
If that's the case, we have a puzzle on our hands, since the diagnostics should report a failed CPU, I would think..
Just for kicks, in System Profiler, what is your information display? Copy down to just before the serial number, as in (my ancient machine)
Hardware Overview:
Machine Name:          Power Mac G5
Machine Model:          PowerMac7,2
CPU Type:          PowerPC 970 (2.2)
Number Of CPUs:          2
CPU Speed:          2 GHz
L2 Cache (per CPU):          512 KB
Memory:          5 GB
Bus Speed:          1 GHz
Boot ROM Version:          5.1.4f0
And paste it into the reply like you did before.
(By the way, and off topic, I at least like the new ability to upload a picture directly. One good change to the discussions.)

Live Migration only using one live migration adapter

Hi,
I have a 2 node cluster spanning two buildings, 4 switches (2 in each building), 2 live migration NICs in each server. I have NIC1 going through switch 1 and NIC2 going through switch 2, same in the other building.
everything talks fine to each other. I decided to team the Live Migration networks so I can get more transferring at once (getting 2Gbps instead of 1, this seemed like a good idea at the time but when I ran a test scenario of failing one of the switches
the live migration was unable to complete (despite the switches being stacked together, maybe I have a config issue I dont know).
so I destroyed the team and thought I'd have two seperate live mig channels, i select these two live mig channels in as live migration networks in failover cluster manager. when i try to live migrate a bunch of VM's it is only using the one adapter, no matter
how many VM's are going down there it will deal with 2 at a time (as per hyper-v settings).
the question is, why is not using my other live migration channel even though that adapter is configured correctly, I have even moved it up in the list and then it will use it so i know it works, but it won't use both together...?
thanks
Steve

Live Migration uses the first network interface in the order you configured it. As far as I know the second interface is only used when the first interface becomes unavailable. But don't pin me on this. Now back to your NIC teaming, because there
is one thing you should know:
When you configure a NIC team without a switch assisted (LACP) configuration your team will have a 2x1Gb outbound and 1x1Gb inbound connection. This is probably why you only get 1x1Gb througput.
When you configure a NIC team with a switch assisted (LACP) configuration you team will have a 2x1Gb outbound and 2x1Gb inbound connection. Such a NIC teaming configuration is in fact a port-channel / ether-channel like you would configure between switches.
This is an optimal configuration.
I hope this information makes more sense to you. If you have any questions let me know.
Boudewijn Plomp, BPMi Infrastructure & Security
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Why only using one CPU

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